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    Led gauge bulbs

    Has anyone put led lights in there gauge cluster and them work. Mine just flicker on and off and go dim and bright. Done bought two sets and same result. Put the old bulbs back in and they work fine. Any advice would be appreciated.
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    New engine tbi 5.7 1994 gmc.

    New engine, new distributor wires plugs, stock setup. New iac, tpms, egr, new vacuum lines also. Base timing at 0°. Rough idle and surging backfire through tbi. I'm at a loss.
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